VAV Controllers LVC-LowVelocity - TROX

Order details
Specification text
Circular VAV circular controllers of type LVC-LowVelocity for
low velocities in variable air flow systems, suitable for supply
or extract air, available in 4 nominal sizes.
Measurement and control of low volume flow rates based on
a new measurement principle. Plastic nozzle with damper
blade for measuring the differential pressure, or effective
pressure, upstream and downstream of the damper blade.
The relation between differential pressure and damper
blade position is stored in the TROX Compact controller
such that a high control accuracy is achieved even in case
of unfavourable upstream flow conditions.
Special characteristics
– Optimised for low air velocities of 0.6 to 6 m/s
– High control accuracy even in case of unfavourable
upstream flow conditions
– Easy flow rate setting without additional equipment
– Factory setting and aerodynamic function testing of every
individual unit on a special test rig
Selection based on nominal size determination. The
customer can easily set volume flows Vmin and V max on the
potentiometers with percentage scales during installation or
commissioning. No supply voltage is required for this. A
transparent protective cover prevents inadvertent resetting
and provides general safety. The control damper blade is set
to 45° ex factory, which allows ventilation air flow without
control.
Differential pressure range 30 to 600 Pa.
The averaging differential pressure sensor is resistant to
dust and pollution.
Air leakage when the damper blade is closed complies
with EN 1751, class 3. The position of the damper blade is
indicated on the outside by the damper blade shaft end.
Variable flow rate control with factory mounted electronic
Compact controller to switch an external control signal;
actual value signal can be integrated into BMS.
24 V AC/DC supply voltage
Electrical connections with screw terminals. Double terminal
for looping the 24 V supply voltage, i.e. for the simple
connection of voltage transmission to the next controller.
Wire clamping bracket fixed to the casing.
Voltage range for control and actual value signal
0 to 10 V DC. Possible override controls with external
switches using potential-free contacts: OPEN, CLOSED,
Vmin and V max .
Clearly visible external indicator light for signalling the
functions:
Set, not set and power failure.
Materials
Casing made of galvanised sheet steel. Nozzle, damper
blade, and plain bearings made of ABS plastic, UL 94, flame
retardant (V0). Damper blade seal made of TPV plastic.
Order code
LVC-LowVelocity
/
160
Subject to change · All rights reserved © TROX GmbH (3/2011)
ype
Nominal size
125
160
200
250
Order example
Make: TROX
Type: LVC-LowVelocity / 160
12